I for one am eagerly anticipating D3, especially some decent graphics, the Havok engine and the cool-looking Monk class.

Also, the promise of more randomness, better crafting and on-the-go HP pickups is getting me all ready to smash some demon heads!

Edit:
Oh. I recently picked up this trick for users of Diablo II (not sure if it works for expansion). Make a shortcut from Diablo2.exe to the desktop; right click the shortcut and click Properties. In the "Target" box, after the last quotation (") mark, type [-w] (without the square braces).
It will now run in windowed mode, and the graphics won't look so horrendously pixellated!

Oh dear...Diablo 3. Honestly, I'm scared. I dumped a disgusting amount of hours into D2. It was the most utterly addicted I'd ever been to a game. It was a good thing my computer eventually crashed, because at some point I had lost the D2 disk and couldn't reinstall it. I figured it was a good thing so I never again bought a copy.

Anyway, Diablo 3 will be amazing. It sounds to me like Blizzard is keeping to their roots on this one, which I am thankful for. If I wanted to play World of Warcraft, I'd play World of Warcraft.